Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 95 for “"Dfe"”.
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Overcoming middle management resistance to strategic change : design for environment (DFE) at Xerox
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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The marine biogeochemistry of dissolved and colloidal Iron
… acquisition in the open ocean. Dissolved iron (dFe) has extremely low concentrations in marine waters that can drive phytoplankton to Fe limitation, effectively linking the Fe and carbon cycles. Understanding the marine biogeochemical cycling and composition of dFe was the focus of this thesis, …
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The marine biogeochemistry of dissolved and colloidal iron
… acquisition in the open ocean. Dissolved iron (dFe) has extremely low concentrations in marine waters that can drive phytoplankton to Fe limitation, effectively linking the Fe and carbon cycles. Understanding the marine biogeochemical cycling and composition of dFe was the focus of this thesis, …
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Understanding ocean iron dynamics and impacts on marine ecosystems
… cycles. Atmospheric deposition of dissolved Fe (dFe) to the ocean has increased over the last decades partly due to human activities, which can significantly alter marine ecosystems. Thus, a comprehensive understanding of how the ocean Fe cycling operates and how it will respond to human …
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Generalized Data-Aided Equalizers for Digital Communication Channels
… characteristics. Comparing the ACE with the DFE, the performance of the ACE is not always better than the performance of the DFE. Therefore, we propose a generalized data-aided equalizer that combines the structures of the ACE and the DFE in order to achieve performance and complexity …
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The seasonal cycling and physico-chemical speciation of iron on the Celtic and Hebridean shelf seas
… type seasonal cycling of dissolved Fe (< 0.2 µm; dFe), which is surprising in a particle rich shelf system, suggesting a balance of scavenging and remineralisation processes. Coincident drawdown of dFe and nitrate (NO3-) was observed during the phytoplankton spring bloom. During the bloom, …
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Low complexity turbo equalizations and lower bounds on information rate for intersymbol interference channels.
… soft-out (SISO) decision feedback equalizer (DFE) algorithm with the extrinsic information mapping methods that directly take into account the error propagation effects of DFE is presented. We also utilize a pair of DFE operating in opposite directions in turbo equalization setting to remove …
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Influence of Tides and Mesoscale Eddies in the Ross Sea
… production is controlled by dissolved iron (dFe), a limiting micronutrient. The main focus of this thesis, motivated by the PRISM-RS project, is to investigate how tides and mesoscale eddies affect the pathways of dFe to the surface ocean.</p> <p>A regional ocean model with four hindcast …
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Receiver equalization for a 10 gigabit per second high-speed serial link in 65 nm CMOS technology
… a 1-tap full-rate decision feedback equalizer (DFE). The combined CTLE and DFE architecture is simulated with an rms receiver clock jitter of 5.3 ps and achieves a BER < 10E−12 while consuming 3.3 mW at the Nyquist frequency of 5 GHz.
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A compressed sensing approach to block-iterative equalization: connections and applications to radar imaging reconstruction
… block iterative decision-feedback equalizers (BI-DFE), where structure is roughly exploited by the signal constellation slicer. By taking advantage of the intrinsic sparsity of signal modulations in a communications scenario, the concept of interblock interference (IBI) can be approached more …
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Decision-feedback equalisation with fixed-lag smoothing in nonlinear channels.
… (FLS) to decision-feedback equalisation (DFE). The resultant algorithm was introduced in a recent paper and is termed herein the Fixed-Lag-Smoothing Decision-Feedback Equalisation (FLSDFE) algorithm. The motivation for studying the FLSDFE algorithm is that it may potentially improve the …
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Optimal designs for linear and nonlinear precoders and decoders
… This thesis focuses on designing linear and DFE-based nonlinear precoders and decoders for the sake of improving the performance of transmission information rate and bit error rate. For linear scheme, we introduce a new criterion named weighted information rate criterion that generalizes our …
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Simulation of adaptive equalization in two-ray, SIRCIM, and SMRCIM mobile radio channels
… (LTE), the decision feedback equalizer (DFE), the lattice equalizer, and the maximum likelihood sequence estimation (MLSE) equalizer. Least mean square (LMS) and recursive least squares (RLS) algorithms are used as the adaptive algorithms for these equalizers. Lattice-DFE, DFE, and MLSE …
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Intra-seasonal variability of Southern Ocean primary production: the role of storms and mesoscale turbulence
… stormlinked physical supplies of dissolved iron (DFe) during the summer played a considerably more active and influential role in explaining the sustained summer productivity in the surface waters of the Southern Ocean than what was thought previously. This was through two important insights: 1. …
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Adaptive iterative multiuser detection for wireless communication systems
… receiver. In studying the classical view of a DFE, the mean square error (MSE) behaviour follows the bit error rate (BER) performance. Certain original results are obtained using the classical adaptive DFE to achieve minimum MSE, employing the least mean square (LMS) algorithm. The results thus …
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Adaptive Equalization for Indoor Channels
… (FSE), the decision-feedback equalizer (DFE), and the maximum-likelihood sequence estimation (MLSE) equalizer. This work also covers adaptive algorithms for equalization including both the least mean squares (LMS) and the recursive least squares (RLS) algorithm. All these equalizer …
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A cholera model linking between-host, within-host and environmental disease dynamics
… we discuss the existence and uniqueness of a DFE (Disease Free Equilibrium) by calculation of the Basic Reproduction number R_0, when applicable, and the existence and uniqueness of a positive EE (Endemic Equilibrium) solution. We also discuss the conditions needed to achieve local and global …
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High-Speed Serial Data Link Design and Simulation
… an adaptive decision feedback equalizer (DFE) for use in unknown or time-varying channels.
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Iron biogeochemistry in the waters surrounding the Crozet Islands, Southern Ocean
… up for the determination of total dissolved Fe (DFe, ? 0.2 µm) and careful assessment of data<br/>demonstrated the high quality of the information obtained in this study. Analytical measurements<br/>of DFe were performed in twenty vertical profiles from the North to the South of the islands …
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Coding and Equalization for Radio Channels
… error decision-feedback equalization (MMSE-DFE) and Viterbi decoding.
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